We used FDC from 6 months old with my first and 4 months old with my second. It was fantastic we had two different carers over that time and they were both fantastic for the kids and followed our gentle parenting and sleep routines. We eventually changed eldest DD when she was 31/2 because she was getting a bit bored and DD2 the year after when she was 3 also. I would highly recommend FDC!!